<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>WebSocket客户端</title>
</head>
<body>

<script type="text/javascript">
    var socket;

    if(window.WebSocket){
        socket = new WebSocket("ws://localhost:8899/ws");
        socket.onmessage = function(event){
            var ta = document.getElementById("responseText");
            ta.value = ta.value + "\n" + event.data;
        }

        socket.onopen = function (event) {
            var ta = document.getElementById("responseText");
            ta.value = "连接开启！";
        }

        socket.onclose = function (event) {
            var ta = document.getElementById("responseText");
            ta.value = ta.value + "\n" + "连接关闭！";
        }

    }else {
        alert("浏览器不支持：WebSocket");
    }

    function send(message) {
        if(!window.WebSocket){
            return;
        }
        if (socket.readyState == WebSocket.OPEN) {
            socket.send(message);
        }
    }



</script>


    <form onsubmit="return false;">
        <textarea name="message" style="width: 400px; height: 200px"></textarea>
        <input type="button" value="发送数据" onclick="send(this.form.message.value)">
        <h3>服务器输出：</h3>
        <textarea id="responseText" style="width: 400px; height: 300px"></textarea>
        <input type="button" onclick="javascript: document.getElementById('responseText').value = ''" value="清空内容">
    </form>
</body>
</html>